In a devastating turn of events, Miss Campbell’s family was initially told that she was alive after the bombings, and being rushed to surgery, however it was later revealed that she had mistaken for her friend Karen.

Krystle’s devastated family have paid tribute to the late 29-year-old and described her as “always smiling”.

Her mother Patty Campbell choked back tears as she remembered her daughter in a press conference outside their family home in Medford, Massachusetts.

With her son Billy by her side, an emotional Patty said: “Everybody that knew her, loved her. She always smiled. You couldn’t ask for a better daughter, I can’t believe this is happening. It doesn’t make any sense.”

Her grandmother, Lillian Campbell, praised her granddaughter’s work ethic and zest for life. “She was smart, ambitious and loving,” Lillian said.

Krystle was inherently proud of her “Irish roots”, as relayed by Medford mayor Michael McGlynn.

"Mr. Campbell said that she certainly was a dream daughter, the daughter that every father dreams to have and friends of hers said that she was eager about life,” he said.

“She had a great sense of humor and freckles and red hair that brought her right to her Irish roots. She was someone who worked hard at everything she did.”